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2 weeks ago my 2-month old Z5 Premium Dual updated itself to Android 7.0.  Ever since, my hotspot (which I need to use everyday) stopped working properly.  You can reach the internet just fine, directly from the phone; but there's no internet on connected laptop (which connects without a problem) when you activate the hotspot (the internet still works just fine on the phone, even when the hotspot is on).

I have two SIMs, both with data packages.  Someone mentioned something about disabling the second SIM, but that did not help.  Sony customer service recommended I do a software repair, which cost me almost a full day.  Unfortunately, nothing changed.

I run Windows Network Diagnostics and get the "Your DNS server might be unavailable" message when I disable or remove SIM2; and get the "Your broadband modem is experiencing connectivity issues" message when I leave the SIM2 in and active, or locate SIM1 in SIM2 slot.  So, it's not a question of having two SIMs with active data packages.

This is very frustrating.  Until the update, same laptop used to connect to the internet through the same phone's hotspot (with the same two SIMs and data packages) without any problems.  Somebody please help, otherwise I will have to dump this very disappointing phone and go back to Samsung very soon.

Thanks!